Structural and electronic properties of magnesium-3D transition metal switchable mirrors

被引：38

作者：

Farangis, B

Nachimuthu, P

Richardson, TJ ^{[1
]}

Slack, JL

Meyer, BK

Perera, RCC

Rubin, MD

机构：

[1] Lawrence Berkeley Lab, Environm Energy Technol Div, Div Bldg Technol, Berkeley, CA 94720 USA

[2] Univ Giessen, Inst Phys 1, Giessen, Germany

[3] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA

来源：

SOLID STATE IONICS | 2003年 / 165卷 / 1-4期

关键词：

hydrogen storage materials; thin films; EXAFS; NEXAFS; X-ray diffraction;

D O I：

10.1016/j.ssi.2003.08.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have observed reversible mirror-to-transparent state switching in a variety of mixed metal thin films containing magnesium and first-row transition elements including Ni, Fe, Co, Mn, and Ti. The very large changes in both reflectance and transmittance on loading these films with hydrogen are accompanied by significant structural and electronic transformations. The valence states and coordination of metal atoms during hydrogen loading were followed using dynamic in situ transmission-mode X-ray absorption spectroscopy. Time-resolved Mg K-edge and Ni, Co, Mn, and Ti L-edge spectra reflect both reversible and irreversible changes in the metal environments. These spectra are compared to those of reference materials and to predictions from calculations. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：309 / 314

页数：6

共 12 条

[1] NEXAFS investigations of transition metal oxides, nitrides, carbides, sulfides and other interstitial compounds [J].